|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Coatings and Surface Engineering for Environmental Protection
||Corrosion Study of Cu-Ag Alloy in the Presence of Benzotriazole Inhibitor
||Hooman Rahmani, Efstathios I Meletis
|On-Site Speaker (Planned)
Datacenter facilities are utilizing an enclosed circulating water cooling system involving Cu channels for heat dissipation. The Cu fins are brazed using eutectic Cu-60Ag alloy. Benzotriazole is added as a corrosion inhibitor in the system. Corrosion signs have been observed involving dissolution of both Ag and Cu causing device failure. The corrosion behavior of this system was investigated. Open circuit potential and anodic polarization experiments of pure Cu, Ag, Cu-60Ag and Cu-6Ag were conducted in water with and without benzotriazole. The results show that benzotriazole shifts Cu corrosion potential to noble direction and lowers its corrosion rate by an order of magnitude while it is not as effective for Ag. XPS studies were conducted to explore inhibitor/metal surface interactions. Potentiostatic experiments on eutectic and Cu-6Ag alloys were conducted to explore possible galvanic and Cu-rich versus Ag-rich phase surface area effects. The inhibition mechanism is discussed in view of the experimental findings.
||Planned: Supplemental Proceedings volume